A color wheel (invented by Isaac Newton) is a wheel used to show the relations of colors. The standard color wheel for light has colors of magenta, yellow, and cyan located at positions that can form an equilateral triangle when connected by straight lines, and another for red, green, and blue. Connecting all 6 of these points forms a hexagon
A circular diagram in which primary and usually intermediate colors are arranged sequentially so that related colors are next to each other and complementary colors are opposite